Window friction adjuster



- i May 21, 1929. $|BLEY 1,713,561

WINDOW FRICTION ADJUSTER I Filed Feb. l, 1927 2 Sheets-Sheet 1 May 21,1929.

E. J. SIBLEY wmnow FRICTION ADJUSTER Filed Feb. 1, 1927 2 Sheets-Sh eat2 Q60 zidoz 5: W attoz d saga- Patented May 21, 1929.

PATENT OFFICE.

EDWIN J. SIBLEY, OF WESTBUBY, NEW YORK.-

wmnowrnlc'rlon ADJUSTER.

Application filed February is to provide generally improved frictioncontrolled means for controlling themovements of the sash. Anotherobject of the invention is to provide a novel improved type ofadjustable friction for this purpose.

Accordingly the invention is embodied in a window friction adjusterarranged and constructed as hereinafter set forth and as illus-. tratedin the accompanying drawings in which n V I Fig. 1 is a view of-a closedsliding window sash equipped with an adjuster embodying the invention,with parts omitted and broken away.

Fig. 2 is a plan view showing the window opened with parts in sectionand parts broken a yi Fig. 3 is a detail view of parts shown in F igure2 and looking in the direction of arrow 3 in said figure.

Fig. 4 is a detail View of Figure 2 looking in the direction of arrow 4.

Fig. 5 is a perspective view of a portion of the sash.

Fig. 6 is an enlarged detail view of friction means.

Fig. 7 is an enlarged tion means.

Fig. 8 is a sectional view on line 8-8 of Fi re 7. V

ig. 9 is a view in erspective showing the friction elements inisassembled position.

Referring to Figures 1 to 5 the reference numeral 10 denotes the windowsash which fits between the jambs 11, 11. 12 indicates the window stool.The sash, or window, is adapted to be swung from the closed position inFigure 1 into the extreme open position shown in Figure 2, and may bepositioned at any desirable angle between these two extreme positions.The friction adjuster for controlling and operating the window isconstructed as follows.

The bottom of the sash is cut out as shown in Figure 5 to provide alongitudinal recess 13 and a transverse cut out portion at 14. In therecess 13 there is screwed to the bottom of the sash a sash plate 15 seeFig. 1, which extends from the edge 16 of the sash a distance along thebottom thereof. The inner end of said sash plate is pivoted at 17 to thethe plan view of the fric- 1, 1927. Serial 110. 105,054.

friction elements designated in general by the numeral 18. To the outerend of the sash plate at 19 there is pivoted a sash arm 20. Theinner endof the sash arm is pivoted at 21 to the adjuster channel 22 secured tothe window stool. The foregoin embraces the main elements of the windowriction adjuster herein disclosed.

The operation is as follows :-The window is opened by. a slight pressureon the sash on the portion 25 furthest away from the adjuster, seeFigure 1. As a consequence the window swings outwardly to the right onthe pivot l7 which at the same time slides along the channel 22 byreason of the opening movement of the sash arm 20 which swings to theleft in Figure2 thereby causing the pivot 17 to slide along the channel.During the openingmovement, the cut out portion 14 in the sash movesover the channel into the position shown in Figure 3. v

The window is closed by moving the inner portion 16 to the right inFigure 2 when, by virtue of the toggle formation of thetwo parts 15 and20, the window will at the same time be swung leftwardly and inwardlyinto closed position in the direction of the arrow 30. When the windowhas been closed, the recess 13 will lie in over the adjusted parts asseen in Figure 1. Consequently the adjuster parts are hidden from viewfrom the outside by reason of the depending ledge 26 on the sash. On theinside of the window there is provided a cleat or piece 28 to concealthe adjusted parts and to provide a ledge against which the windowcloses.

In order to control the window and hold it in any of its adjustedpositions, friction elements such as 18 are provided. The friction is soarranged and adjusted, that when the window has been moved into anyparticular position, the friction means will hold it against ordinarypressure. However, should an extraordinary pressure be exterted againstthe window, the resistance of the friction elements will be overcome andthe window will close. It is an object of this invention to pro vide anovel type of friction elements as follows, see Figures 6 to 9.

A'friction housing 31 is provided in the shape of a bracket adapted toslide in the channel 22. The housing comprises a bridge 32 which fitsthe opening of the channel and depending feet 33 which extend down intothe channel. The bridge has an opening 34 for pivoting the sash plate 15to it by the pivot 17.

Two friction shoes 35, 35 of babbit or similar suitable material is laidwithin" the housing and rests on thefeet 33. The shoes are adapted to bepressed laterally outward to engage Tie justment of the screw 37 ofcourse efi'e'cts ad justment of the friction shoes against the channel.The shoes 35 may have a cutout portion at 38 to facilitate the flexingof the springs. The screw 37 is located so as to 'be convenientlyoperated upon when the window is opened. 7 v

In operation the friction elements slide within the channel engaging thesides thereof frictionally with a force depending upon the adjustmentof'the friction springs and shoes. It will be noted that the force ofthe friction is laterally expansive only in that the shoes and wires aresuspended on the feet 33 and raised from the bottom of the channel. Thissides of the channeh construction makes for greater efficiency and lesswear. A stop 40, Fig. 2, may beprovided to limit the leftward openingmovement ofthefriction elements 18 and prevent dead looking or binding.The invention is not limited in its uses to windows, but may be appliedto control the movements of other swinging elements.

Friction" means comprising in combination a fixed channel, a housingadapted to slide in said channel, said housing comprising a bridgemember adapted to fillthe longitudinal channel opening and dependingfeet adapted to slide on the bottom of the channel, friction shoessupported within said housing on the feet thereof and provided withopposed cut out portions, wire springs laid between the friction shoeson the said housing feet and a screw in said bridge'member' adapted toforce said springs apart and flex thesame within'the' cut out portionsoffthe shoes to cause the latter to frictionally engage the EDWIN J.sIBLriYL

